Bosch writes in “A Spirituality for the Road,”

“All this seems to support the view that the missionary is supposed to become less and less worldly. The only worldliness he is allowed to have is to experience some difficulty in becoming more and more other worldly.

I am increasingly experiencing difficulties with this view of spirituality. Spirituality or devotional life seems to mean withdrawal from the world, charging my battery, and then going out into the world. The image is of an automobile which runes on batteries only. The batteries are charged for so many hours during the night and then the automobile runs so many miles during the day until the batteries become too weak to pull the car. For more mileage one would have to charge the batteries for a longer period of time. Transferred to the spiritual sphere, this means: so many minutes of spiritual exercise will give me so much mileage for the day that follows. And if I find that I am run down before evening, this simply means that I have to spend more time in the morning charging my spiritual battery.”

there is much more surrounding this thought…i am putting together some thoughts and will post them later…